WO2010044526A1 - Plaque de vibration intégrée pour haut-parleur miniature, son procédé de fabrication et haut-parleur miniature incluant la plaque de vibration - Google Patents

Plaque de vibration intégrée pour haut-parleur miniature, son procédé de fabrication et haut-parleur miniature incluant la plaque de vibration Download PDF

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Publication number
WO2010044526A1
WO2010044526A1 PCT/KR2009/002679 KR2009002679W WO2010044526A1 WO 2010044526 A1 WO2010044526 A1 WO 2010044526A1 KR 2009002679 W KR2009002679 W KR 2009002679W WO 2010044526 A1 WO2010044526 A1 WO 2010044526A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
vibration member
polymer compound
micro speaker
rigid
Prior art date
Application number
PCT/KR2009/002679
Other languages
English (en)
Korean (ko)
Inventor
김창원
이원택
도성환
Original Assignee
주식회사 비에스이
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 비에스이 filed Critical 주식회사 비에스이
Publication of WO2010044526A1 publication Critical patent/WO2010044526A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials

Definitions

  • the present invention relates to a diaphragm for a micro speaker, and more particularly, to an integrated diaphragm for a micro speaker in which a rigid member is inserted in a central portion of the diaphragm, a manufacturing method thereof, and a micro speaker including the diaphragm.
  • sound reproducing apparatus is used for horn speakers, hi-fi audio systems such as component systems, system speakers consisting of woofers, midrange and tweeters covering a certain frequency band, and general covering all frequency bands in one unit.
  • Ultra-lightweight and ultra-slim micro speakers such as speakers, micro camcorders, walkmans, PDAs, notebook computers, portable telephones, and IMT2000 communication terminals, receivers used in mobile communication terminals, and earphones having a structure in which some are inserted into the ear And, it can be classified as a buzzer that receives only a frequency of a specific band.
  • PDAs Portable devices
  • notebook computers IMT2000 communication terminal, etc. hear the sound played by the user at a certain distance from the device.
  • These portable devices are becoming smaller in size in accordance with the trend of miniaturization of overall size and weight, and the micro-speakers employed therein also continue to require downsizing.
  • micro-speakers are easy to download various music files according to the development of wireless Internet technology and the implementation of IMT2000, and the necessity of high-input / high-output and high-to-low bass reproduction is required like speakers for orchestra.
  • FIG. 1 is an exploded perspective view showing an example of a micro-speaker according to the prior art
  • Figure 2 is a cross-sectional view showing the diaphragm of FIG. Referring to Figures 1 and 2 will be described the structure of a conventional micro speaker as follows.
  • the conventional micro speaker 100 has a yoke 20 having a groove 22 formed at its center, a magnet 30 inserted at intervals with respect to an inner wall of the groove 22, a plate 32 mounted above the magnet, and a yoke.
  • the frame 10 coupled to the outside of the body 20 to form a body, the diaphragm 50 supported by the inner end of the frame, is attached to the lower surface of the diaphragm and fitted in the gap between the yoke 20 and the magnet 30
  • a voice coil 40 oscillating up and down and a protective plate 70 covering the upper portion opened at the upper end of the frame and having at least one sound discharge hole 72 are formed.
  • a terminal 12 for supplying an external signal to the voice coil 40 is formed at one side of the frame 10.
  • the voice coil 40 which is supplied with an external signal, vibrates up and down by acting on the plate 32, etc., which is joined to the magnet 30 and magnetized. By vibrating the coupled diaphragm 50, the sound is generated by the pressure with the outside air.
  • the conventional diaphragm 50 structure includes a central portion 50b having a dome shape and an edge portion 50a extending to the outside of the central portion 50b and having an annular shape at left and right.
  • Conventional diaphragm 50 is molded by pressing a polymer compound of a single material in the form of a film, it is generally made of the same material and the same thickness.
  • the resonant frequency Fs of the diaphragm 50 is determined according to the edge portion 50a of the single diaphragm compound 50
  • the diaphragm 50 of the single polymer compound is manufactured in an arch shape in order to give rigidity to the central portion 50b. That is, by constructing the central portion 50b of the diaphragm 50 in a dome shape, the rigidity is structurally reinforced.
  • the diaphragm 50 is composed of a single film as described above, a problem occurs in that the sound is greatly distorted.
  • a method of manufacturing the diaphragm 50 by stacking the rigid member 102 having a light weight and rigidity on the central portion 111b of the polymer compound film 111 as shown in FIGS. 3 and 4 has been proposed.
  • film sheets 101 and 103 are laminated on the upper and lower portions of the rigid member 102 for chemical resistance and moisture resistance to the rigid member 102.
  • the rigid member 102 is laminated between the upper sheet 101 and the lower sheet 103 and bonded to the central portion 111b of the polymer compound film 111 to form the diaphragm 110.
  • the chemical resistance and the moisture resistance can be strengthened and the rigidity can be increased without modifying the central portion 111b.
  • the upper sheet 101 and the lower sheet 103 for laminating the rigid member 102 on the top and the bottom are made of a thin, light and rigid material.
  • a metal material such as an aluminum sheet or a polymer compound film sheet may be used as the upper sheet 101 and the lower sheet 103.
  • FIG. 5 is a flowchart illustrating a process of manufacturing the diaphragm shown in FIG. 4.
  • the diaphragm 110 is completed by adhering the two materials.
  • the polymer compound film 111 is prepared by bonding a multilayer polymer compound film (S51), molding (S52), and blanking (S53).
  • the rigid member 102 and the upper sheet 101 are adhered (S54) and the lower sheet 103 is adhered (S55)
  • the rigid member 102 to which the sheets 101 and 103 are bonded is blanked ( The rigid member 102 is manufactured by blanking (S56).
  • the diaphragm 110 After adhering the rigid compound 102 to which the polymer compound film 111 and the sheets 101 and 103 manufactured as described above are attached, the diaphragm 110 is completed by drying (S57).
  • the diaphragm 110 manufactured as described above has a problem in that the side surface of the rigid member 102 may not have perfect chemical resistance and moisture resistance as shown in FIG. 4.
  • the manufacturing process is complicated because it requires a plurality of molding, blanking, and bonding processes, such as manufacturing a polymer compound film, laminating, and bonding a rigid member.
  • the present invention is to solve the above problems, by sealing the rigid member in the central portion of the polymer compound film forming the diaphragm to produce a diaphragm excellent in chemical resistance and moisture resistance, the integrated diaphragm for micro-speakers, simple manufacturing process, It is an object of the present invention to provide a micro speaker comprising the manufacturing method and the diaphragm.
  • the rigid member is laminated to the central portion of the first vibration member, the second vibration member is laminated to the first vibration member to produce a diaphragm, thereby forming a diaphragm.
  • An object of the present invention is to provide a diaphragm, a manufacturing method thereof, and a micro speaker including the diaphragm.
  • an integrated diaphragm for a micro speaker includes a first vibration member including an edge portion of an edge and a central portion of a center thereof; A rigid member attached to a central portion of the first vibration member and composed of a rigid material having a specific gravity lower than that of the first vibration member; And a second vibration member attached to an upper surface of the first vibration member to which the rigid member is attached to seal the rigid member.
  • the first vibration member is characterized in that the polymer compound film form, characterized in that the plurality of polymer compound films are formed by laminating.
  • the rigid member is characterized in that it is formed of any one selected from polymer compounds, ceramics and pulp.
  • the second vibrating member may be formed in the form of a polymer compound film, and may be formed by stacking a plurality of polymer compound films.
  • a diaphragm manufacturing method includes a first step of forming a first vibrating member made of a polymer compound film material; Attaching a rigid member made of a rigid material having a specific gravity lower than that of the first vibration member to a central portion of the first vibration member; A third step of attaching a second vibration member made of a polymer compound film to an upper surface of the first vibration member to which the rigid member is attached to seal the rigid member; And a fourth step of manufacturing the vibrating plate by molding the joined first vibrating member, the rigid member, and the second vibrating member.
  • the yoke is formed in the center of the yoke;
  • a magnet mounted to the groove at a predetermined interval with respect to an inner wall of the groove;
  • a plate mounted on an upper portion of the magnet;
  • a frame coupled to the outside of the yoke to form a body;
  • a diaphragm supported by the inner end of the frame and coupled over the plate;
  • a voice coil attached to a lower surface of the diaphragm and inserted into and coupled to a space between the magnet and the yoke, and configured to oscillate up and down according to a driving signal;
  • a protective plate extending from an upper end of the frame to cover an upper portion of the diaphragm and having at least one sound discharge hole formed therein, wherein the diaphragm comprises an edge portion of an edge and a central portion of the center.
  • a rigid member attached to a central portion of the first vibration member and composed of a rigid material having a specific gravity lower than that of the first vibration member; And a second vibration member attached to an upper surface of the first vibration member to which the rigid member is attached to seal the rigid member.
  • the specific gravity of the diaphragm film in the lower portion has a merit that the light weight and rigid material is inserted and sealed to compensate for the weakness of the rigid member chemical and moisture resistance.
  • the rigid member is bonded to the central portion of the polymer compound film without undergoing a plurality of molding, blanking, and bonding processes, such as manufacturing a polymer compound film for manufacturing a diaphragm and laminating and bonding a rigid member.
  • a plurality of molding, blanking, and bonding processes such as manufacturing a polymer compound film for manufacturing a diaphragm and laminating and bonding a rigid member.
  • FIG. 1 is an exploded perspective view showing an example of a micro-speaker according to the prior art.
  • FIG. 2 is a cross-sectional view of the diaphragm of FIG.
  • FIG 3 is a cross-sectional view showing a rigid member attached to a diaphragm according to the prior art.
  • FIG. 4 is a cross-sectional view of the diaphragm to which the rigid member of FIG. 3 is attached.
  • FIG. 5 is a flowchart illustrating a diaphragm manufacturing process according to the prior art.
  • FIG. 6 is a sectional view showing an integrated diaphragm for a micro speaker according to the present invention.
  • FIG. 7 is a flowchart illustrating a manufacturing process of an integrated diaphragm for a micro speaker according to the present invention.
  • FIG. 8 is a cross-sectional view showing a micro speaker including a diaphragm according to an embodiment of the present invention.
  • micro speaker 101 the upper sheet
  • the present invention is a polymer compound film using a rigid member as a vibration member in order to adhere the rigid member in order to give rigidity to the central portion of the diaphragm inserted into the micro-speaker, to ensure the chemical resistance and moisture resistance of the bonded rigid member
  • FIG. 6 is a cross-sectional view showing an integrated diaphragm for a micro speaker according to the present invention.
  • the diaphragm 120 according to the present invention adheres the rigid member 121 to the central portion 111b of the first vibrating member 111 in the form of a polymer compound film, and the rigid member 121 is bonded.
  • the rigid member 121 can be formed in a sealed body.
  • first vibrating member 111 and the second vibrating member 122 play a unique function of the diaphragm, and are sealed inside the central portion 111b of the two vibrating members 111 and 122.
  • the rigid member 121 is inserted in order to give rigidity to the central portion of the diaphragm 120.
  • the first vibrating member 111 has a central portion (111b) that is mainly responsible for the treble from the center of the diaphragm 120 and the edge portion 111a that forms a dome in the shape of a dome on the outside of the diaphragm 120 to perform the bass It is composed of
  • the first vibration member 111 may be composed of a polymer compound film.
  • Polymer materials such as 'polyphenylene sulfide (PPS)', 'polyethylene naphthalate (PEN)', 'polyethylene teraphthalate (PET)', 'polyehter imide (PEI)' and 'poly imid (PI)' can be used. have.
  • the shape of the edge portion 111a or the center portion 111b may be variously modified, and may be manufactured by stacking a plurality of polymer compound films with the first vibration member 111. That is, the center portion 111b can be manufactured by modifying it into any other shape such as a dome shape or a plane.
  • the rigid member 121 is preferably to use a material having a light weight and rigidity, and since the material having a low specific gravity should be used, it is mainly used a foam material.
  • a low specific gravity material such as polymer, ceramic, wood, or the like may be used.
  • the second vibration member 122 may be formed of a polymer compound film, and may use the same material as that of the first vibration member 111 or use a different material. On the other hand, since the second vibrating member 122 is bonded to the first vibrating member 111 to form the vibrating plate 120 as a whole, it is preferable to use a material having the characteristics of the vibrating plate 120. In the case of the second vibration member 122, a plurality of polymer compound films may be laminated and manufactured.
  • the first vibrating member 111 is formed by bonding a multilayer polymer compound film (S71), and then the second vibrating member 122 includes the rigid member 121 and the multilayer polymer compound film. To be bonded (S72).
  • the diaphragm according to the present invention is completed by blanking (S74).
  • FIG. 8 is a cross-sectional view illustrating a micro speaker including a diaphragm according to an exemplary embodiment of the present invention.
  • Micro speaker 200 according to the present invention and the yoke 20 is formed with a groove 22 in the center; A magnet 30 mounted in the groove 22 at intervals with respect to the inner wall of the groove 22; A plate 32 mounted on the magnet 30; A frame 10 coupled to the outside of the yoke 20 to form a body; An integral diaphragm 120 supported by the inner end of the frame 10 and spanned over the plate 32 and having a structure according to the invention described above; A voice coil 40 attached to a lower surface of the diaphragm 120 and fitted into a gap between the magnet 30 and the inner wall of the groove 22 to vibrate up and down according to an external signal; And a protective plate 70 extending from an upper end of the frame 10 to cover the upper portion of the diaphragm 120 and having at least one sound discharge hole 72 formed therein.
  • the voice coil 40 which is supplied with an external signal, vibrates up and down by acting on the plate 32, which is bonded to the magnet 30 and magnetized, and the voice coil 40 is vibrated by the vibration.
  • the diaphragm 50 coupled at the lower surface is vibrated, sound is generated by the pressure with the outside air.
  • the micro-speaker according to the present invention can be distinguished from the conventional micro-speaker structure in that the diaphragm according to the present invention is applied, the structure is extended to all types of speakers under the premise that it includes an integrated diaphragm according to the present invention. May be
  • a lightweight and rigid material is inserted and sealed at the center of the diaphragm film to compensate for chemical and moisture resistance, which are weak points of the rigid member.
  • the manufacturing process can be simplified by adhering the rigid member to the center of the polymer compound film and sealing the polymer compound film again without going through several molding, blanking, and bonding processes, thereby reducing the cost.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

La présente invention porte sur une plaque de vibration intégrée pour haut-parleur miniature. En particulier, la plaque de vibration inclut : un élément de vibration primaire incluant une unité de bord correspondant à la partie de bord de celui-ci et une unité centrale correspondant à la partie centrale de celui-ci ; un élément rigide qui est attaché à l'unité centrale de l'élément de vibration primaire et qui est fait d'un matériau rigide présentant une masse volumique inférieure à celle de l'élément de vibration primaire ; et un élément de vibration secondaire pour sceller l'élément rigide en étant attaché à la surface supérieure de l'élément de vibration primaire avec l'élément rigide sur celui-ci.
PCT/KR2009/002679 2008-10-15 2009-05-21 Plaque de vibration intégrée pour haut-parleur miniature, son procédé de fabrication et haut-parleur miniature incluant la plaque de vibration WO2010044526A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0101153 2008-10-15
KR20080101153A KR101000756B1 (ko) 2008-10-15 2008-10-15 마이크로 스피커용 일체형 진동판, 그 제조 방법 및 그 진동판을 포함하는 마이크로 스피커

Publications (1)

Publication Number Publication Date
WO2010044526A1 true WO2010044526A1 (fr) 2010-04-22

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Family Applications (1)

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PCT/KR2009/002679 WO2010044526A1 (fr) 2008-10-15 2009-05-21 Plaque de vibration intégrée pour haut-parleur miniature, son procédé de fabrication et haut-parleur miniature incluant la plaque de vibration

Country Status (4)

Country Link
KR (1) KR101000756B1 (fr)
CN (2) CN101729961B (fr)
TW (2) TW201016040A (fr)
WO (1) WO2010044526A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101931849A (zh) * 2010-09-30 2010-12-29 无锡杰夫电声有限公司 具有锥形定位支片的薄型扬声器
KR101156053B1 (ko) * 2010-11-22 2012-06-20 주식회사 비에스이 마이크로 스피커
CN102256196B (zh) * 2011-01-26 2015-06-03 歌尔声学股份有限公司 微型动圈式电声转换器及其组装方法
CN103475981B (zh) 2013-08-27 2017-05-17 歌尔股份有限公司 扬声器振动系统
US9584886B2 (en) * 2014-07-16 2017-02-28 Htc Corporation Micro-speaker
CN109862490B (zh) * 2018-12-30 2021-07-09 瑞声声学科技(深圳)有限公司 扬声器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60217795A (ja) * 1984-04-13 1985-10-31 Matsushita Electric Ind Co Ltd スピ−カ用振動板
JPS6119299A (ja) * 1984-07-05 1986-01-28 Sansui Electric Co スピ−カ用振動板
US4699242A (en) * 1984-12-28 1987-10-13 Daikin Trade & Industry Co., Ltd. Magnetic speaker
JPS63283394A (ja) * 1987-05-15 1988-11-21 Matsushita Electric Ind Co Ltd 平板振動板
JP2002218585A (ja) * 2001-01-18 2002-08-02 Matsushita Electric Ind Co Ltd スピーカ
KR200337835Y1 (ko) * 2003-08-22 2004-01-13 주식회사 대림음향 소형 스피커 유닛용 진동판
KR100592100B1 (ko) * 2004-04-16 2006-06-21 학교법인 성균관대학 마이크로 스피커의 진동판

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1175295A (ja) * 1997-08-29 1999-03-16 Kyocera Corp 電磁型レシーバ
KR100788476B1 (ko) * 2006-09-04 2007-12-24 주식회사 이엠텍 고음질 마이크로 스피커 및 구조

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60217795A (ja) * 1984-04-13 1985-10-31 Matsushita Electric Ind Co Ltd スピ−カ用振動板
JPS6119299A (ja) * 1984-07-05 1986-01-28 Sansui Electric Co スピ−カ用振動板
US4699242A (en) * 1984-12-28 1987-10-13 Daikin Trade & Industry Co., Ltd. Magnetic speaker
JPS63283394A (ja) * 1987-05-15 1988-11-21 Matsushita Electric Ind Co Ltd 平板振動板
JP2002218585A (ja) * 2001-01-18 2002-08-02 Matsushita Electric Ind Co Ltd スピーカ
KR200337835Y1 (ko) * 2003-08-22 2004-01-13 주식회사 대림음향 소형 스피커 유닛용 진동판
KR100592100B1 (ko) * 2004-04-16 2006-06-21 학교법인 성균관대학 마이크로 스피커의 진동판

Also Published As

Publication number Publication date
TW201016040A (en) 2010-04-16
CN201422157Y (zh) 2010-03-10
TWM379297U (en) 2010-04-21
KR101000756B1 (ko) 2010-12-13
CN101729961B (zh) 2013-06-05
CN101729961A (zh) 2010-06-09
KR20100042040A (ko) 2010-04-23

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